SD1 Rates and Fees Schedule

SD1 issues industrial wastewater discharge permits to Significant Industrial Users (SIUs) and Categorical Industrial Users (CIUs) that require routine monitoring for certian pollutants. SD1 charges SIUs and CIUs a permit fee to pay for administration of the program. Learn more in SD1's Rates and Fees Schedule

Surcharges pay for the cost of treating high-strength wastewater. 

Because it costs more to treat, SIUs also are charged a surcharge for their wastewater when it exceeds the concentrations listed below:

Parameter Concentration
BOD 240 mg/l
TSS 300 mg/l
TKN 30 mg/l
Phosphorus* 10 mg/l

*Phosphorus applies to Eastern Regional Water Reclamation Facility only. 

How is your surcharge calculated?

Surcharges are based on the strength and volume of the wastewater an industry discharges. SD1 uses the following formula to calculate the surcharge:

R = A(TSS-300) + B(BOD-240) + C(TKN-30) + D(P-10)

R =   Total surcharge rate in dollars per 100 cubic feet of wastewater flow
TSS =   Total suspended solids 
 BOD =   Biochemical oxygen demand 
 TKN =   Total kjeldahl nitrogen 
P =   Total phosphorus 
 A, B, C, D =                 Numerical factors related to unit costs of providing primary and secondary treatment for the indicated pollutants 

Industries can apply for a special meter to lower their costs.

A special meter monitors any water used that does not flow directly into the sanitary sewer system. If non-residential customers enroll in this program, they may apply for refunds for their special meter water usage. 

Prior to purchasing and installing a special meter, customers should read and understand the program regulations stated in section 403 of SD1's Rules and Regulations

To request approval to install a special meter, all industrial and commercial facilities must contact SD1's Industrial Pretreatment Department at 859-547-1109. SD1 will work with you to schedule a meeting for a facility inspection and to discuss installation options. 

Once a special meter is in place, SD1 will inspect it to verify proper installation. When the process is complete, you will receive an approval letter that will include your percentage of credit approved, dates the meter should be read and other meter details. 

Please note that special meter readings not submitted by dates specified in an approval letter may be subject to a decrease in credit.
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